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1. |
At what temperature will the resistance of a copper wire become three times its value at 0°C? (Temperature coefficient of resistance for copper = 4 x 10-3 per 0C) |
A. | 400 0 c |
B. | 450 0 c |
C. | 550 0 c |
D. | 500 0 c |
Answer» E. | |